#container{
    display: flex;
    flex-direction: row;
}
#container aside{
    flex-basis: 300px;
    background-color: cadetblue;
    line-height: 4em;
}
#container aside li{
    list-style: none;
    cursor: pointer;
}
#container aside li:hover{
    color: yellow;
}
#container main{
    flex-flow: 1;
    background-color: aliceblue;
    display: flex;
    flex-direction: column;
}
#container main header{
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}
#container .item{
    width: 300px;
    height: 300px;
    border: 1px solid gray;
    background-color: chocolate;
    border-radius: 50px;
    text-align: center;
}
#container .current{
    font-size: 500;
    color: red;
}
#container main #content{
    display: flex;
    justify-content: center;
}
#container main #content table{
    width: 80%;
    border: 1px solid green;
    border-collapse: collapse;
}
#containe main #content table th,tr{
    border: 1px solid green;
}
